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Alloy 77NMD (ЭП264)

Designation

Name The value
Designation GOST Cyrillic 77НМД
Designation GOST Latin 77HMD
Transliteration 77NMD
The chemical elements 77NiCuД
Name The value
Designation GOST Cyrillic ЭП264
Designation GOST Latin EP264
Transliteration EhP264
The chemical elements -

Description

Alloy 77NMD used: for the manufacture of small cores of transformers, chokes and relays, working in weak magnetic fields, screens. Small thickness (0,05- 0,02 mm) — for the cores of pulse transformers, magnetic amplifiers and contactless relays.

Note

Alloy with high magnetic permeability in weak fields at saturation induction of 0.65−0.75 T. the Alloy after heat treatment with slow cooling from 600 °C is characterized by a slight change of properties in the climatic temperature range.

Standards

Name Code Standards
Classification, nomenclature and general norms В30 GOST 10160-75, GOST 10994-74
Tapes В34 TU 14-1-1306-75, TU 14-1-1708-76
Sectional and shaped rolling В32 TU 14-11-245-88

Chemical composition

Standard C S P Mn Si Ni Fe Cu Mo
GOST 10994-74 ≤0.03 ≤0.01 ≤0.02 ≤1.4 0.1-0.3 75.5-78 The rest 4.8-6 3.9-4.5
Ni is the basis.
According to TU 14-1-1708-76 the chemical composition for the alloy of grade 77NMD-VI is given.

Physical characteristics

Temperature r, кг/м3
20 8600

A description of the physical symbols

Name Description
r Density

Technological properties

Name The value
Features of production Tape on the other 14-1-1708-76 supplied in cold-worked condition without heat treatment.

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